Le eot s



UNITED STATES `L is aspecification.

My invention relates more particularly to the `molds employed in casting hollow copper or brass ingots which are to be drawn out into lpipes or tubes; and its object is to aid in sup- `Cmrfportin g the Q centrally in a mold and to provide for delivering themolten metal at an even temperature at all parts of the circumference 15 of the mold when the metal is poured from a single ladle.

.lo this lend myinvention consists in the combination, with an ingot-mold and a core supported at the bottom thereof, of a distributingu zo head conforming to the interior ofthe mold and fitting within the same at some distance below its mouth, having recesses in its circumference forming ducts, and receiving within it and centering the core, whereby molten metal poured z 5 upon the distributing-head immediately over the core is conducted to diiferent-points of its circumference and delivered into the mold.

' It also consists in a distributing-head of the kind described constructed with grooves or re- 3o cesses in its hollow interior for venting the mold.

The inventionl also `consists in a novel construction or formationof the ducts through which the molten metalis conducted down 'around the head tothe mold, whereby the sur- 3 5 face withwhich the molten metal comes in contact is reduced as muchas possible to prevent chilling the metal.

It also consists in certain other novel features iinthe construction of the said head and 4c in the combination of said head with an ingotmoldahd its core.

In the accompanying drawings, Figure 1 represents a vcentral'vertical section through an ingot-mold having my improved head applied `.1,5 thereto. Fig. 2 represents a plan of the'head separate from .the mold, and Fig. 3 represents atran's'verse ysectionofthe head upon the dotted lineas Fig. 1.

PATENT OFFICE.

LEROY s. wnITE, 0E wATEEBUEY, CONNECTICUT, AssIGNoE To BEowN a BEoTHEEs, oE SAME PLAGE.

MOLD FOR CASTING HOLLOW INGOTS.

'SPECIFICATION forming part of Letters Patent No. 235,476, dated December 14, 1880.

" Application sled october 14, leso.

(No model.)

Similar letters of reference designate corresponding parts in all the figures. 5o

A designates a cylindric mold, which may be of cast-iron and which rests upon a baseplate, B, which is provided with a face piece or projection which ts into the mold, thus holding the latter against lateral movement. 5 5

C designates an ordinary sand core, which is built up on a hollow core :barrel or center, D, which fits in a recess in the base-plate B and is thereby held exactly concentric within the mold. 6o

The .mold A is made somewhat larger or higher than usual, and in the top or mouth thereof is a head,E, which is of cylindric form, to conform to and snugly fit inthe mold at some distance below its mouth,the top of said head 6 5 being somewhat below the top or mouth of the mold. The head E is made hollow inside, as shown in Fig. 1, and is open at the bottom and closed at the top. The inner diameter of the head is of sucient diameter to receive the 7o core or core-barrel within it, thus properly centering the core in the mold, and the head rests upon the top of the core-barrel D and is provided inside at the top with cross-ribs a, which leave aspace between the top of the core-bar- 7 5 rel and the under side of the top of the head for the escapel of gas.

The top of the head E is preferably constructed with a central recess, b, which is faced or covered with crucible material, so as to pre- 8o Vvent the molten metal, when poured in, from eating or wasting away the iron of which the head is composed.

In the circumference of the head E are a series of recesses, c, which lead outward from the 8 5 central recess, b, and which, when the head is inserted in the mold, form ducts for the passage of the metal down past the head and into the mold. These ducts are formed at regular intervals around the circumference of the mold, 9o and although only four are here shown, this number will be increased as the diameter of the mold is increased.

As clearly shown in Fig. 1 and in dotted outline in Fig. 2, the lower portions, c', of the 9 5 recesses or ducts c are deeper than the upper We iw portions thereof-that is, they are extended farther into the head or are undercut-and hence the molten metal drops clear of the sides of the ducts and is chilled as little as possible by contact with the cast-iron.

The gas which is given oli' by the send core C as the molten metal is poured in escapes through the perforations in the core barrel or center I) and down out the open lower end thereof.

The air and gas from the mohl may escape through the holes d (shown dotted) in the sides thereof; but in lieu of these holes I preferably construct the head with grooves or recesses c upon its interior, as shown in Fig. 2 in dotted outline and in full outline in Fig. 3. These grooves or recesses are placed between the recesses c c', and through them air und gas may escape from the mold up around the core, where it is supported in the head, and down through the hollow core barrel or center I).

By my invention I provide for properly centering the core, and also for distributing the molten metal at a uniform temperature around the circumference of the mold.

What I claim as my invention. und desire to secure by Letters Patent, is-

1. The comblnation, with en ingot-mold and a core supported at the bottom thereof', of a 1 distributing-head conforming to the interior of l the mold and fitting within the same ut some i dista-nce below its mouth, having recesses in its circumference forming ducts, and receiving within it and centering the core, substantially as herein speciled.

2. A hollow distributing-cap for a. mold, adapted to fit within the mold and to receive within it the core or corebarrel, and constructed at its circumference with ducts to lead to the interiorof the mold, and having grooves or recesses in its interior for venting the mold, substantially as and for the purpose specified.

3. The combination, with an iugot-mold and u core supported at the bottom thereof, of a distributing-head conforming to the interior ot' 45 the mold and fitting within the same at some distance below its mouth, receiving within it and centering the core, and having recesses in its circmnlerence forming ducts, the lower portions of which are recessed deeper or undercut back of the upper portions, substantially as and for the purpose specified.

4. The combination of the mold A, the core C, the core-barrel D, and the cap E, constructed with ducts c upon its exterior and recesses or grooves e upon its interior. substantially as and for the purpose specilied.

LE ROY S. WHITE.

\V1tnesses:

(l. H. GLoWEs, FRANK PARTREE.

It is limebybertied that in Letters Patent No. 235,476, dated December 14, 1880,

for llnproven'lent in lVloldh` for (.lnsting.;l Ilollow lng'ots, on page l, linol 1201 thor Specification forming; part of smid Letters Patent, after the word the the word core was erroneously printed eoil 5 `tlntt the proper corrections have been nntde in the records of the Oice, and that the correction is hereby made in said Letters Patent..

Signed, oountersigned, und settled this 31st (luy of' December, A I), 1880.

{smh} A. BELL,

Acting Secretary of the Interior. Oountcrsigned E. M. lNlARBLF.,

Commissioner of Patents. 

